功能簡介：
簡單快速的閱讀功能。適合移動使用，免安裝。
Sumatra has a minimalistic design. Simplicity has a higher priority than a lot of features.
It's small and starts up very fast.
It's designed for portable use: it's just one file with no external dependencies so you can easily run it from external USB drive.
下載檔案
